Dental appliance



FIG. 1 is a front perspective view of a dental appliance showing my new design;

FIG. 2 is a back perspective view of the design shown of FIG. 1;

FIG. 3 is a front view of the design shown of FIG. 1;

FIG. 4 is a back view of the design shown of FIG. 1;

FIG. 5 is a left side view of the design shown of FIG. 1;

FIG. 6 is a right side view of the design shown of FIG. 1;

FIG. 7 is a top view of the design shown of FIG. 1; and,

FIG. 8 is a bottom view of the design shown of FIG. 1.

The broken lines in the Figures illustrate portions of the dental appliance that form no part of the claimed design. 

CLAIM The ornamental design for a dental appliance, as shown and described. 